Maxim Integrated MAX693MJE Microprocessor Supervisory Circuit

The MAX693MJE from Maxim Integrated is a high-quality microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in controlling microprocessor systems.

This robust device integrates several key features that make it an essential component for any system requiring reliable operation. The MAX693MJE ensures that if the power supply voltages drop below a certain threshold, the microprocessor will reset and restart cleanly on every power-up or brownout condition. It achieves this with a precision voltage monitor that keeps a watchful eye on the VCC.

One of the standout features of the MAX693MJE is its ability to provide a reset signal to the microprocessor during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V, and the reset threshold voltage is factory-set at 4.65V, which is suitable for 5V-powered circuits.

This device also includes a watchdog timer that can be set by the user with an external capacitor. The watchdog timer ensures that the microprocessor does not hang in an uncontrolled state by forcing a reset if the microprocessor fails to strobe within a preset time frame.

The MAX693MJE comes in a JEDEC-standard 16-pin Ceramic Dual-In-Line Package (C-DIP) that ensures durability and reliability even in harsh environmental conditions. It is designed to operate over a wide temperature range, making it suitable for use in various applications, including computers, controllers, intelligent instruments, and critical µP power monitoring.

In summary, the Maxim Integrated MAX693MJE microprocessor supervisory circuit is a versatile and reliable solution for system monitoring. Its ease of use, combined with its watchdog timer and automatic reset capabilities, make it an invaluable component for maintaining the integrity and stability of microprocessor systems.